I get the same warning with Strawberry Perl v5.20.2, but not on v5.18.2.

You're right! My default perl is currently 5.18:

C:\test>\perl5.18\perl\bin\perl.exe junk37.pl
SUCCESS
SUCCESS
SUCCESS
SUCCESS
SUCCESS

C:\test>\Perl5.20\bin\perl.exe junk37.pl
Useless use of greediness modifier '+' in regex; marked by <-- HERE in
+ m/((?:a|b)){1}+ <-- HERE / at junk37.pl line 15, <DATA> line 2.
SUCCESS
SUCCESS
SUCCESS
SUCCESS
SUCCESS

C:\test>\Perl22\bin\perl.exe junk37.pl
Useless use of greediness modifier '+' in regex; marked by <-- HERE in
+ m/((?:a|b)){1}+ <-- HERE / at junk37.pl line 15, <DATA> line 2.
SUCCESS
SUCCESS
SUCCESS
SUCCESS
SUCCESS

[download]
Is the warning erroneous?

Erm. I was relying on Perl to tell me :)

The fact that the warning has been recently added suggests it is probably correct.

That said, the construct is still listed in the 5.22 docs:  {n}+   Match exactly n times and give nothing back (redundant); which basically means your guess is as good as anybody's at this point?

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". I knew I was on the right track :)
In the absence of evidence, opinion is indistinguishable from prejudice.
I'm with torvalds on this Agile (and TDD) debunked I told'em LLVM was the way to go. But did they listen!

In reply to Re^7: about style: use possessive or atomic? by BrowserUk
in thread about style: use possessive or atomic? by rsFalse

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